Incoming call cow ringtone

Source: Cow Moos #6, sound 2386, by Joseph SARDIN / BigSoundBank.
Source page: https://bigsoundbank.com/cow-moos-6-s2386.html
Original: https://bigsoundbank.com/UPLOAD/bwf-en/2386.wav
License: CC0 1.0 Universal (public-domain dedication).
License URL: https://creativecommons.org/publicdomain/zero/1.0/
Verified source license: 2026-10-13.

Adaptation: converted to mono PCM 16-bit at 24 kHz, normalized, faded
at edges, repeated twice with short pauses for a looping call alert.
